Granted Patent
Utility
US 5,602,219 · App. 08/446,414
Process for preparing cycloolefin copolymers
Inventors:
Michael Aulbach, Michael-Joachim Brekner, Frank K uber, Frank Osan, Thomas Weller, J urgen Rohrmann
Patented Case
View Patent ↗
Granted: Feb 11, 1997
Filed: May 22, 1995
Inventors
Michael Aulbach
Michael-Joachim Brekner
Frank K uber
Frank Osan
Thomas Weller
J urgen Rohrmann
Assignee (at issue)
Hoechst GmbH
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.